BACKGROUND AND AIMS: Patients with long atrial high-rate episodes (AHREs) ≥24 h and stroke risk factors are often treated with anticoagulation for stroke prevention. Anticoagulation has never been compared with no anticoagulation in these patients. METHODS: This secondary pre-specified analysis of the Non-vitamin K antagonist Oral anticoagulants in patients with Atrial High-rate episodes (NOAH-AFNET 6) trial examined interactions between AHRE duration at baseline and anticoagulation with edoxaban compared with placebo in patients with AHRE and stroke risk factors. The primary efficacy outcome was a composite of stroke, systemic embolism, or cardiovascular death. The safety outcome was a composite of major bleeding and death. Key secondary outcomes were components of these outcomes and electrocardiogram (ECG)-diagnosed atrial fibrillation. RESULTS: Median follow-up of 2389 patients with core lab-verified AHRE was 1.8 years. AHRE ≥24 h were present at baseline in 259/2389 patients (11%, 78 ± 7 years old, 28% women, CHA2DS2-VASc 4). Clinical characteristics were not different from patients with shorter AHRE. The primary outcome occurred in 9/132 patients with AHRE ≥24 h (4.3%/patient-year, 2 strokes) treated with anticoagulation and in 14/127 patients treated with placebo (6.9%/patient-year, 2 strokes). Atrial high-rate episode duration did not interact with the efficacy (P-interaction = .65) or safety (P-interaction = .98) of anticoagulation. Analyses including AHRE as a continuous parameter confirmed this. Patients with AHRE ≥24 h developed more ECG-diagnosed atrial fibrillation (17.0%/patient-year) than patients with shorter AHRE (8.2%/patient-year; P < .001). CONCLUSIONS: This hypothesis-generating analysis does not find an interaction between AHRE duration and anticoagulation therapy in patients with device-detected AHRE and stroke risk factors. Further research is needed to identify patients with long AHRE at high stroke risk.

• Klíčová slova
• Atrial fibrillation, Atrial high-rate episodes, NOAH-AFNET 6, Stroke,
• MeSH
• antikoagulancia terapeutické užití   MeSH
• cévní mozková příhoda * etiologie   prevence a kontrola   diagnóza   MeSH
• fibrilace síní * komplikace   farmakoterapie   diagnóza   MeSH
• lidé MeSH
• pyridiny * MeSH
• rizikové faktory MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• srdeční síně MeSH
• thiazoly * MeSH
• Check Tag
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• Názvy látek
• antikoagulancia MeSH
• edoxaban MeSH Prohlížeč
• pyridiny * MeSH
• thiazoly * MeSH

• Klíčová slova
• AF populations at risk, AF screening, AF screening devices, Asymptomatic atrial fibrillation, Atrial fibrillation, Patient’s benefits of AF screening,
• MeSH
• cévní mozková příhoda * MeSH
• fibrilace síní * diagnóza   terapie   MeSH
• lidé MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH

• MeSH
• hodnocení rizik MeSH
• konsensus MeSH
• lidé MeSH
• srdeční arytmie * diagnóza   terapie   MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• Asie MeSH
• Latinská Amerika MeSH